Harper-Nelson banned after not checking medication properly

Beijing Olympics 100 meters hurdles champion Dawn Harper-Nelson has been banned for three months after she tested positive for the banned diuretic hydrochlorothiazide, the United States Anti-Doping Agency (USADA) said on Tuesday.

The ban is effective from Dec. 1, 2016.

USADA said it had accepted Harper-Nelson's explanation that her positive test was caused by medication she was prescribed by a physician to treat hypertension.

"Harper-Nelson further explained that she made efforts to determine if the medication contained prohibited substances; however, due to using partial search terms, those efforts were unsuccessful," USADA said in a statement.